I couldn't find anything on the forums about but at risk of sounding stupid I thought I'd ask anyway. Does case hardened steel behave the same way as any other hardenable steel under heat? When one of the guys in the truck shop at work says they literally bin the stuff when it's reached the end of its serviceable life so he is having a word with his boss to see if there's is any reason I can't take it.

Thanks in advance

No. Case hardening is only a few thousandths thick of surface hardening. Its an anti-wear process it does NOT add carbon, cyanide, or any of the other case hardening agents deeper than just the surface. It enCASES the subject. Heat treatment has little if any effect to the casing.

Frosty The Lucky.

Thanks Frosty.